Belt-shifter.



N0. 693,969: A Patented Feb. 25, |902.

` F. HIRSCH.

' BELT SHIFTER. (L'ppumin ma Aug. n, 1900.)

(im nodal.)

esse;

UNTED YSTATES PATENT OFFICE.

FRANK HIRSOIL OF STOCKHOLM, SWEDEN.

BELT-SHIFTER.

SPECIFICATION' forming part of Letters Patent N o. 693,969, dated February 25, 1902.v

Applicationaiearugust 29.1900. seria No. 28,477. maman.)

To ctZZ- whom, t may concern:

Be it known that I,FRANK HIRsCH,engineer, a subject of the King of Sweden and Norway, and a resident of Stockholm, in the Kingdom of Sweden, have invented new and useful Improvements in Belt-Shifters, of which the following is a specilication, reference being hadv to the accompanying drawings.

This invention relates to improvements in belt-Shifters, and has for its object the production of a belt-shifting device by means of which the shifting of a belt from one pulley to another or from one portion of a stepped pulley to another portion thereof may be readily and conveniently accomplished from below where the pulleys are located at a considerable elevation, such as close up to the ceiling in high workshops.

To this end the invention consists of certain novel features of construction, combination, and arrangement of parts, as will be herein-` after more fully described, and particularly pointed out in the appended claim.

In the accompanying drawings, Figure 1 is a side elevational view of a belt-shifter embodying my invention, showing the same mounted in position for use. Fig. 2 is a top plan view of the same detached and on an enlarged scale. Fig. 3 is a rear end elevation. Fig. 4 is a vertical longitudinal section.

Referring now more particularly to the drawings, wherein like reference characters designate corresponding parts throughout the several views, thenumeral 1 represents a vertical oscillatory support consisting of a rod or bar journaled at its lower end in a bracket 2, secured to the frame of the machine or part to ,be drivensuch as a lathe, as shown in the present instanceand at its upper end in a shelf, bar, or bracket 8, located at a suitable elevation above such machine, and et represents a drive-belt running over pulleys 5 and (i, arranged, respectively, on the machine element and on a drive-shaft 7, journaled in hangers 8, depending from said shelf. It will of course be understood that the belt may be arranged to cooperate with fast and loose pulleys in connection with an ordinary single pulley or a stepped pulley, as desired,the manner of mounting the gearing in thisparticular being immaterial to the operation of the invention. The rod 1 is provided in close cross-head slidably mounted by eyes 12 upon r said rods and provided with a socket 13 to receive the rod 1 and a set-screw 14 to engage said rod and hold the belt-shifting device fixed in adjusted position thereon. As shown in Fig. 1, the said belt-shifting device 4entends horizontally or at right angles to the rod, and the loop or eye 10 engages .the adjacent stretch of the belt, so that bysimply turning the handle 1a in one direction or the other the rod 1 will be turned to swing the belt-shifting devicelongitudinally of thelathe and drive-shaft to shift the belt from the fast to the loose pulley on the drivefshaft, and` vice Versa, as desired. By slidably mounting the IXed frame member or section 9 on the rod l and the adjustable frame-section 10v on said member 9 it is obvious that the beltshifting device may not only be adjusted vertically to suit the elevation 'ofthe drive-pulley,'but also horizontally toward and from the belt, so as to be adapted for application to belts varying in their distance from the rod 1.

Having thus particularly described my invention, what I claim, and desire to secure by Letters Patent, is l I n a belt-shifter, the combination with suitably-arranged pulleys having a belt thereon,-

and an oscillating rod mounted in bearings, of a forked frame, a cross-head adjustable between the forks of the frame and having a socket for thepassage-of the rod, means coacting'with saidsocket whereby to ren der the frame adjustable on said rod, and a loop on said frame for the passage of said belt, substantially as specified.

In witness whereof I have hereunto set my hand in presence of two Witnesses.`

FRANK HIRSCI-I.

Witnesses: Y

WILH. JEnKnL, t H. voN HtDENBERG. 

